package com.singleton;

import org.junit.Test;

/**
 * @Author WaveHi
 * @Date 7/8/2021 下午 3:17
 * @Version 1.0
 * @Contact HJBWaveHi@163.com
 * @Description
 */
public class MainView {

    public static void main(String[] args) {



    }

    @Test
    public void printD() {

        int i;

        String s1 = "212";

        System.out.println(System.getProperty("user.name"));

    }

}
